WD Blue 3D NAND 500GB PC SSD – SATA III 6 Gb/s, 2.5″/7mm – WDS500G2B0A with Blue 4TB PC Hard Drive – 5400 RPM Class, SATA 6 Gb/s, 64 MB Cache, 3.5″

Price range: £32.99 through £213.95

Make sure this fits by entering your model number.
3D NAND SATA SSD for capacities up to 2TB* with enhanced reliability. |*As used for storage capacity, one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment
Sequential read speeds up to 560MB/s and sequential write speeds up to 530MB/s.** |**As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second and gigabit per second (Gb/s) = one billion bits per second

WD 24TB My Book Duo Desktop RAID External Hard Drive HDD, USB 3.1, With Password Protection and Auto Backup Software…

Price range: £99.99 through £799.99

Make sure this fits by entering your model number.
Massive capacity storage with auto and system backup
Raid-0 ready out of the box